II. The Lord’s Day

From The Catechism of the Catholic Church

2175
Sunday is expressly distinguished from the sabbath which it follows
chronologically every week; for Christians its ceremonial observance replaces
that of the sabbath. In Christ’s Passover, Sunday fulfills the spiritual truth
of the Jewish sabbath and announces man’s eternal rest in God. For worship
under the Law prepared for the mystery of Christ, and what was done there
prefigured some aspects of Christ:¹⁰⁷

PART THREE: LIFE IN CHRIST

SECTION TWO THE TEN COMMANDMENTS
- CHAPTER ONE YOU SHALL LOVE THE LORD YOUR GOD WITH ALL YOUR HEART, AND WITH ALL YOUR SOUL, AND WITH ALL YOUR MIND
  - Article 3 THE THIRD COMMANDMENT
    - II. The Lord’s Day

From The Catechism of the Catholic Church – rosary.team